Three lamps are connected in series across a 120V supply and take a current of 1.5A. If the resistance of two of the lamps is 30Ω, what is the resistance of the third lamp?

SSC JE Electrical 2019 with solution SET-1
Three lamps are connected in series across a 120V supply and take a current of 1.5A. If the resistance of two of the lamps is 30Ω, what is the resistance of the third lamp?

20Ω

30Ω

40Ω

10Ω

20Ω

30Ω

40Ω

10Ω

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SSC JE Electrical 2019 with solution SET-1
If admittance Y= a + jb, then a =?

Reactance

Resistance

Conductance

Susceptance

Reactance

Resistance

Conductance

Susceptance

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SSC JE Electrical 2019 with solution SET-1
An electric motor in which both the rotor and stator fields rotate with the same speed is called

Synchronous motor

Universal motor

DC motor

Induction motor

Synchronous motor

Universal motor

DC motor

Induction motor

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SSC JE Electrical 2019 with solution SET-1
Z1 and Z2 are connected in series to form a load. A wattmeter’s current coil is connected in series with the load, whereas its pressure coil is connected across Z2. The wattmeter reads

Power consumed by Z1

Power consumed by Z1 and Z2

Power consumed by Z2

Zero always

Power consumed by Z1

Power consumed by Z1 and Z2

Power consumed by Z2

Zero always

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SSC JE Electrical 2019 with solution SET-1
Which of the following is the correct relation regarding coupled coils?

M = (L1 + L2)/2

M = (L1 − L2)/2

M > (L1L2)0.5

M ≤ (L1L2)0.5

M = (L1 + L2)/2

M = (L1 − L2)/2

M > (L1L2)0.5

M ≤ (L1L2)0.5

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SSC JE Electrical 2019 with solution SET-1
Identify the important feature of a DC series motor

Low starting torque

High starting torque

Zero starting torque

Medium starting torque

Low starting torque

High starting torque

Zero starting torque

Medium starting torque

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SSC JE Electrical 2019 with solution SET-1

SSC JE Electrical 2019 with solution SET-1 Three lamps are connected in series across a 120V supply and take a current of 1.5A. If the resistance of two of the lamps is 30Ω, what is the resistance of the third lamp?

SSC JE Electrical 2019 with solution SET-1 If admittance Y= a + jb, then a =?

SSC JE Electrical 2019 with solution SET-1 An electric motor in which both the rotor and stator fields rotate with the same speed is called

SSC JE Electrical 2019 with solution SET-1 Z1 and Z2 are connected in series to form a load. A wattmeter’s current coil is connected in series with the load, whereas its pressure coil is connected across Z2. The wattmeter reads

SSC JE Electrical 2019 with solution SET-1 Which of the following is the correct relation regarding coupled coils?

SSC JE Electrical 2019 with solution SET-1 Identify the important feature of a DC series motor

SSC JE Electrical 2019 with solution SET-1
Three lamps are connected in series across a 120V supply and take a current of 1.5A. If the resistance of two of the lamps is 30Ω, what is the resistance of the third lamp?

SSC JE Electrical 2019 with solution SET-1
If admittance Y= a + jb, then a =?

SSC JE Electrical 2019 with solution SET-1
An electric motor in which both the rotor and stator fields rotate with the same speed is called

SSC JE Electrical 2019 with solution SET-1
Z1 and Z2 are connected in series to form a load. A wattmeter’s current coil is connected in series with the load, whereas its pressure coil is connected across Z2. The wattmeter reads

SSC JE Electrical 2019 with solution SET-1
Which of the following is the correct relation regarding coupled coils?

SSC JE Electrical 2019 with solution SET-1
Identify the important feature of a DC series motor